Hi everyone, so I purchased my 2015 IS 250 Fsport in February. I love the car, but I’ve had an ongoing problem with it since! I have this vibration going on since I bought the car. I had the wheels fixed, changed all my brakes (this problem was resolved since it also did it while braking), have gotten my suspension checked out by my Lexus dealer and my personal mechanic, they both say everything is good. So, I got it checked this week again and it seems as if the front wheels were still bent. Let me clarify, when I fixed the wheels that helped a lot, but it didn’t go away completely. So I got brand new Niche 18x8 gamma wheels this weekend! They look super nice. It also helped with the vibration, but I still feel a little something. I have no clue as to what to do now. Please any help would be great. Thankyou.

 

You don't mention mileage but front wheel bearings start to wear gradually and eventually get worse. If your wheels were damaged and stressing the bearings, then that can cause premature wear on bearings even on lower mileage vehicles.

 

I have 55k miles. The thing is they say everything checks out and I the car sounds the same.

 

The same issue does not happen on my IS 350 FSport RWD but has like forever on my GS300 RWD going around bends - just tend to ignore it! lol

 

if your tires arent balanced properly or if their worn, that's usually the issue

 

I do as well, it just gets really frustrating at times. My car is AWD.

 

If the vibration only occurs at 70mph or higher, assuming when you're cruising, then it's likely a wheel balance issue.
I realize you put new wheels on and it got better, so that kinda indicates the issue is still at the wheels.
If you had the wheel bearings checked and there is no play, then I would get your new wheels Road Force balanced, if they haven't been already.
The tires on the Niche, are they new tires or from the original Lexus rims?

 

I agree that Road Force balancing will give you the best results. Considering that you've seen/heard improvement and the techs say it's OK maybe you have very high standards or are just very sensitive to the frequency of the sound. Neither of which you can help. When I speak to my mother on the phone, I have to turn the volume all the way down as I find her voice to be piercing but no one else does. Very annoying. When you got new wheels did you put on new tires? As tires wear they can change their sound. Try swapping tires rear to front when you get them road force balanced. Hope our suggestions help you enjoy your drives.

 

Yeah they are the original tires. And okay, road force balance. I have to see where in NY they do it.

 

i didn’t get new tires, but my front tires are only a month old. And it’s more of a feel instead of a sound.

 

What make/model/size are the tires?
It's likely a tire issue, which likely the road force balance will correct, or make better to the point where it's not an issue.

 

A vibration you feel is tough to ignore.

 

My rear tires are 255/35ZR18
My front tires are 225/40R18

 

You stated above the Niche wheels were 18x8...is that all 4 or just the front?
What kind of tires are they? The make/model of tire might explain the vibration as well.

 

To Everyone Commenting on this Thread - speaking from long term personal experience, quite certain that @ @Jatnieln's issue goes much deeper than tires, wheels, simple balancing, mechanics, or swapping out parts - see my post re-pasted here. IMO this has more to do with infrastructure, frame, chassis, etc.

Relatedly, I've gone through pretty much everything with my GS - multiple new tires, alignments, balancing, inspections, dealer test drives, etc, etc, and with a Benz owner car fan in the pasenger seat, whenever driving around bends at moderate speeds, felt the vibration (per my post so used to it now that I ignore it), and he piped up saying "wtf is that?!". lol He initially theorized something to do with ABS but I don't think that's the case.

I THINK just some Lexus have this issue.